Abstract
An InGaN/GaN blue light emitting diode (LED) structure and an InGaN/GaN green LED structure were grown sequentially onto the same sapphire substrate so as to achieve a nitride-based near-white LED. In order to avoid the thyristor effect, we choose a large 1 × 1 mm2 LED chip size, which was six times larger than that of the normal LED. It was found that we could observe a near-white light emission with CIE color coordinates x = 0.2 and y = 0.3, when the injection current was lower than 200 mA. It was also found that the output power, luminous efficiency and color temperature of such a near-white LED were 4.2 mW, 0.81 m/W, and 9000 K, respectively.
Original language | English |
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Pages (from-to) | 2257-2260 |
Number of pages | 4 |
Journal | Physica Status Solidi C: Conferences |
Issue number | 7 |
DOIs | |
Publication status | Published - 2003 |
Event | 5th International Conference on Nitride Semiconductors, ICNS 2003 - Nara, Japan Duration: 2003 May 25 → 2003 May 30 |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics